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    Staghorn calculi (also sometimes called coral calculi) obtain their characteristic shape by forming a cast of the renal pelvis and calices, thus resembling the horns of a stag. The vast majority of staghorn calculi are radiopaque and appear as branching calcific densities overlying the renal outline and may mimic an excretory phase IVP. Lamination within the stone is common. Read more: radiopaedia.org/...

    What a beautiful example of a: Staghorn calculi (also sometimes called coral calculi) obtain their characteristic shape by forming a cast of the renal pelvis and calices, thus resembling the horns of a stag. Staghorn calculi are the result of recurrent infection and are thus more commonly encountered in 4 women, those with renal tract anomalies, reflex, spinal cord injuries, neurogenic bladder or ileal ureteral diversion. Learn so much here: radiopaedia.org/...

    Staghorn calculi, also sometimes called coral calculi, obtain their characteristic shape by forming a cast of the renal pelvis and calices, thus resembling the horns of a stag. radiopaedia.org/...

    Jackstone calculus is the name assigned to the appearances of a sub-set of urinary tract calculi. These calculi have a jagged irregular edge, that resemble the appearance of traditional toy jacks. The calculi have a very dense central core component with bony spicules radiating outwards, hence the name. radiopaedia.org/...

    Jackstone calculus is the name assigned to the appearances of a sub-set of urinary tract calculi. These calculi have a jagged irregular edge, that resemble the appearance of traditional toy jacks. The calculi have a very dense central core component with bony spicules radiating outwards, hence the name. Read more: radiopaedia.org/...

    Horseshoe kidneys are the most common type of renal fusion anomaly. They render the kidneys susceptible to trauma and are an independent risk factor for the development of renal calculi and transitional cell carcinoma of the renal pelvis. The kidneys are also orientated with the lower pole closest to the midline, which is the reverse of normal. radiopaedia.org/...

    Urolithiasis refers to the presence of calculi anywhere along the course of the urinary tracts. For the purpose of the article the terms urolithiasis, nephrolithiasis and renal or kidney stones are used interchangeably, although some authors have slightly varying definitions of each. Everything you want to know about renal stones: radiopaedia.org/...

    Horseshoe kidneys are the most common type of renal fusion anomaly (see developmental renal anomalies). They render the kidneys susceptible to trauma and are an independent risk factor for the development of renal calculi and transitional cell carcinoma of the renal pelvis. A horseshoe kidney is formed by fusion across the midline of two distinct functioning kidneys, one on each side of the midline. Read more: radiopaedia.org/...

    IVP shows a left lower ureteric calculus on control film most likely at the VUJ. See the whole of this great case of a traditional imaging modality: radiopaedia.org/...

    A pelvic kidney is a kidney that is seen fixed in the bony pelvis or across the spine. These patients are asymptomatic. Renal tract pathology (e.g. infection, calculus) can affect pelvic kidneys and thus the referred pain is not typical for the renal tract and it may be confused for appendicitis or pelvic inflammatory disease. radiopaedia.org/...

    Puncture needle for nephrostomy insertion for an infected system secondary to proximal ureteric stone seen on the control image. Urolithiasis refers to the presence of calculi anywhere along the course of the urinary tracts. For the purpose of the article the terms urolithiasis, nephrolithiasis and renal or kidney stones are used interchangeably. Read more: radiopaedia.org/...

    A perinephric abscess may result due to rupture of a renal abscess into the perirenal space, but usually it develops directly from acute pyelonephritis. However, any inflammatory process outside the Gerota's fascia may also result in perinephric abscess. Such kind of abscesses have been seen quite frequently in diabetic patients with calculi and in patients with septic emboli. Read more: radiopaedia.org/...

    Labeled Soft Tissue Neck from KU Radiographic Anatomy

    Urolithiasis Ureteral Calculus: Obstructing Ureteral Calculus Non-enhanced axial CT scan images of the abdomen and pelvis demonstrate an enlarged right kidney with perinephric stranding (white arrow), a dilated intrarenal collecting system (blue arrow) and a calcific density at the ureterovesical junction (red arrow) with dilatation of the ureter.

    Bilateral renal transplant calcification. radiopaedia.org/...

    Renal angiomyolipomas (AML) are type of benign renal neoplasm and are composed of vascular, smooth muscle and fat elements. They can result in spontaneous haemorrhage and usually have characteristic imaging appearances. radiopaedia.org/...

    A duplicated testicular vein is about 6x more common on the left than on the right | Radiology Case contributed by Dr Donna D'Souza | Radiopaedia.org

    Renal cell carcinomas (RCC) are malignant tumours derived from the renal epithelium. It is the most common malignant renal tumour, with a variety of radiographic appearances. Recently, especially in the elderly, there is increasing scope for percutaneous intervention. Imaging is essential in accurately staging renal cell carcinomas (see RCC staging (TNM) and Robson staging) and in operative planning. Read more: radiopaedia.org/...

    Renal cell carcinomas (RCC) are malignant tumours derived from the renal epithelium. It is the most common malignant renal tumour, with a variety of radiographic appearances. CT is frequently used to both diagnose and stage renal cell carcinomas.The nephrogenic phase is the most sensitive phase for detection of abnormal contrast enhancement. Read more: radiopaedia.org/...

    Renal oncocytomas are a type of relatively benign renal tumour. The main clinical importance of this lesion is the difficulty in pre-operatively distinguishing it from renal cell carcinomas, as epidemiology, presentation, imaging and even histology can be very similar. Unfortunately the imaging appearance of oncocytomas is difficult to distinguish from renal cell carcinoma, and as such they are usually resected. Read more: radiopaedia.org/...

    There are stones and then there are stones! This is a gigantic ureteric stone. See the complete case: radiopaedia.org/...